Today i will be sharing with you an interesting exam-based question on using the Ideal Gas Equation pV = nRT.
In case that you have forgotten much about Ideal Gas Law & the Ideal Gas Equation, you can do a quick revision via my previous blog post.
Let’s take a look at the question.
If the behaviour of gas W is described exactly by the equation pV=nRT, which of the following statement(s) about gas W is correct?
I: The density of gas W at constant pressure is inversely proportional to its temperature
II: One mole of gas W occupies the same volume under the same conditions of temperature and pressure as an ideal gas
III: The volume of a given mass of gas W is doubled if its temperature is raised from 25 oC to 50 oC
You can choose more than one statement to be correct.
Interesting question isn’t it. Perhaps you want to work out your own answer before you scroll down to take a look at my suggested solution.
Statement I is correct!
pV = nRT
pV = (mass/Mr)RT
ρ = pMr/RT since ρ = mass / … Continue reading ...